Why doesn't <select> fill onLoad?

I have this situation.

HTML:
<body onLoad="chk_models();">

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<div class="row">
			<div class="col-sm-3 col-xs-3"><div style="padding-left:5px;"><u>Select Brand/Model</u></div></div>
			<div class="col-sm-3 col-xs-3">				<select name="ctbrand" onChange="get_mods();">
					<option value="">-- Select Brand --</option>
					<option value="BAC" >BAC</option>
					<option value="EVAPCO" selected>EVAPCO</option>
					<option value="SPX/MARLEY" >SPX/MARLEY</option>
					<option value="Other" >Other</option>
				</select>
				
			</div>
			<div class="col-sm-1 col-xs-1">&nbsp;</div>

			<div class="col-sm-3 col-xs-3">				<select name="ctmodel" id="ctmodel" onChange="get_dims();">
		<option value="">-- Select Model --</option>	
		</select><br><span style="visibility:hidden;"><input type="text" name="bother" size="14" id="bother"></span>
				
			</div>
		</div>

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Javascript:
function chk_models() {
	if (document.st.ctbrand.value != "") {
		get_mods();
	}
}

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function get_mods() {
	if (document.st.ctbrand.value == "Other") {
		document.getElementById("ctmodel").style.visibility = "hidden";
		document.getElementById("bother").style.visibility = "visible";
	} else {	
		document.getElementById("ctmodel").style.visibility = "visible";
		document.getElementById("bother").style.visibility = "hidden";
		modeld = document.getElementById('ctmodel');
		removeOptions(modeld);
		sbrand = document.st.ctbrand.value;
		var opt = document.createElement('option');
		opt.value = "";
		opt.innerHTML = "-- Select Model --";
		modeld.appendChild(opt);
		for (var i = 0; i<=nr; i++){
			if (brand[i] == sbrand) {
				var opt = document.createElement('option');
				opt.value = model[i];
				opt.innerHTML = model[i];
				modeld.appendChild(opt);
			}			
		}
		var opt = document.createElement('option');
		opt.value = "Other";
		opt.innerHTML = "Other";
		modeld.appendChild(opt);
	}	
}

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When page displays in browser, only the value "Other" appears in the ctmodel select.

Since the value of ctbrand is NOT other, why does this happen?

Thanks
Richard KortsAsked:
Who is Participating?
 
Leonidas DosasConnect With a Mentor Commented:
Put the last code thst you posted it BEFORE my script  and test it. Uncaught ReferenceError: set_pointers is not defined but I think that you defined this function in another part of your script.
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Leonidas DosasCommented:
Richard you have multiple syntactical errors in your code.I debug your javascript code until one line but you must define what are some variables that you are using as I show you below. I post the code as I debug it and the image with red circle variables that you haven't define these yet:
  <!doctype html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>	</title>
</head>
<body onLoad="chk_models();">
	<div class="row">
			<div class="col-sm-3 col-xs-3"><div style="padding-left:5px;"><u>Select Brand/Model</u></div></div>
			<div class="col-sm-3 col-xs-3">				
			<select name="ctbrand" id="ctbrand" onChange="get_mods();">
					<option value="">-- Select Brand --</option>
					<option value="BAC" >BAC</option>
					<option value="EVAPCO" selected>EVAPCO</option>
					<option value="SPX/MARLEY" >SPX/MARLEY</option>
					<option value="Other" >Other</option>
				</select>
				
			</div>
			<div class="col-sm-1 col-xs-1">&nbsp;</div>

			<div class="col-sm-3 col-xs-3">				
			<select name="ctmodel" id="ctmodel" onChange="get_dims();">
		<option value="">-- Select Model --</option>	
		</select><br><span style="visibility:hidden;"><input type="text" name="bother" size="14" id="bother"></span>
				
			</div>
		</div>
		<script>
		var ctbrand=document.getElementById('ctbrand');
		  function chk_models() {
	            if (ctbrand.value != "") {
		            get_mods();
	            }
              }
			  
			  
			function get_mods() {
			
	if (ctbrand.value == "Other") {
		document.getElementById("ctmodel").style.visibility = "hidden";
		document.getElementById("bother").style.visibility = "visible";
	} else {	
		document.getElementById("ctmodel").style.visibility = "visible";
		document.getElementById("bother").style.visibility = "hidden";
		modeld = document.getElementById('ctmodel');
		ctmodel.remove();		
		sbrand =ctbrand.value;
		var opt = document.createElement('option');
		opt.value = "";
		opt.innerHTML = "-- Select Model --";
		modeld.appendChild(opt);
		for (var i = 0; i<=nr; i++){
			if (brand[i] == sbrand) {
				var opt = document.createElement('option');
				opt.value = model[i];
				opt.innerHTML = model[i];
				modeld.appendChild(opt);
			}			
		}
		var opt = document.createElement('option');
		opt.value = "Other";
		opt.innerHTML = "Other";
		modeld.appendChild(opt);
	}	
}  
		</script>
</body>
</html>

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Capture.JPG
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Richard KortsAuthor Commented:
Sorry, I forgot to include all the code:

<script type="text/javascript">
window.onload = function () {
   set_pointers();
};
brand = new Array();
model = new Array();
leng = new Array();
wid = new Array();
dpt = new Array();
smodel = "<? print $_SESSION['ctmodel']; ?>";
nr = <? print $nr; ?>;
<? for ($i = 0; $i < $nr; $i++) { 
	$m = mysqli_fetch_array($res,MYSQLI_ASSOC);?>
	brand[<? print $i; ?>] = "<? print $m['Brand']; ?>";
	model[<? print $i; ?>] = "<? print $m['Model']; ?>";
	leng[<? print $i; ?>] = "<? print $m['Length']; ?>";
	wid[<? print $i; ?>] = "<? print $m['Width']; ?>";
	dpt[<? print $i; ?>] = "<? print $m['Depth']; ?>";
<? } ?>	

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This code occurs right after (as you can see) the <script type="text/javascript">

If you are not familiar with php, these values are loaded from a database using php.

If necessary, I can show you the source after php translation.

Thanks
0
 
Richard KortsAuthor Commented:
I could not solve it this way, I tried another, it worked.

Points awarded for effort.
0
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